const theme_switcher = document.getElementById("theme-switcher"); const imgs = document.getElementsByTagName("img"); let theme = window.localStorage.getItem("theme"); if (theme !== null) { if (theme === "light") { changeToLightTheme(); } else { changeToDarkTheme(); } } else { if ( window.matchMedia && window.matchMedia("(prefers-color-scheme: dark)").matches ) { changeToDarkTheme(); } } theme_switcher.addEventListener("click", () => { if (theme_switcher.textContent.indexOf("off") !== -1) { changeToDarkTheme(); } else { changeToLightTheme(); } }); function changeToDarkTheme() { theme_switcher.textContent = "turn the light on"; document.documentElement.style.setProperty("--border", "var(--dark-border)"); document.documentElement.style.setProperty("--text", "var(--dark-text)"); document.documentElement.style.setProperty("--bg", "var(--dark-bg)"); window.localStorage.setItem("theme", "dark"); for (let i = 0; i < imgs.length; i += 1) { imgs[i].src = imgs[i].src.replace("-light", "-dark"); } } function changeToLightTheme() { theme_switcher.textContent = "turn the light off"; document.documentElement.style.setProperty("--border", "var(--light-border)"); document.documentElement.style.setProperty("--text", "var(--light-text)"); document.documentElement.style.setProperty("--bg", "var(--light-bg)"); window.localStorage.setItem("theme", "light"); for (let i = 0; i < imgs.length; i += 1) { imgs[i].src = imgs[i].src.replace("-dark", "-light"); } } // DEBUG console.log(window.innerWidth); console.log(window.innerHeight);